FM 24-20 1944: War Department field manual, field wire systems. (OBSOLETE)
"The purpose of this manual is to establish standard practices for the installation, operation, and maintenance of field wire systems of tactical units. Such standardization is essential to efficient wire communication. The individual duties of wire personnel of various types of units are explained specifically in training publications pertaining to the different arms. Complete technical information about particular items of wire communication equipment is given in references listed in various paragraphs herein and in Technical Manuals listed in FM 21-6."
Digitized by the Combined Arms Research Library (CARL) Digital Library, US Army Combined Arms Center. http://cgsc.cdmhost.com/cdm/